CVE-2026-84005
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AMD Zen Processor Security-Critical Code Removal Vulnerability
Vulnerability report for CVE-2026-84005, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-11-10
Last updated on: 2026-11-10
Assigner: Microsoft Corporation
Description
Description
Processor optimization removal or modification of security-critical code in AMD Zen allows an authorized attacker to disclose information locally.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows 11 version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7652 (exc) |
| Microsoft | Windows 11 Version 23H2 | From 10.0.22631.0 (inc) to 10.0.22631.7652 (exc) |
| Microsoft | Windows 11 Version 24H2 | From 10.0.26100.0 (inc) to 10.0.26100.9711 (exc) |
| Microsoft | Windows 11 Version 25H2 | From 10.0.26200.0 (inc) to 10.0.26200.9711 (exc) |
| Microsoft | Windows 11 version 26H1 | From 10.0.28000.0 (inc) to 10.0.28000.3231 (exc) |
| Microsoft | Windows 11 Version 26H2 | From 10.0.26300.0 (inc) to 10.0.26300.9711 (exc) |
| Microsoft | Windows Server 2019 | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows Server 2019 (Server Core installation) | From 10.0.17763.0 (inc) to 10.0.17763.9376 (exc) |
| Microsoft | Windows Server 2022 | From 10.0.20348.0 (inc) to 10.0.20348.5761 (exc) |
| Microsoft | Windows Server 2025 | From 10.0.26100.0 (inc) to 10.0.26100.33650 (exc) |
| Microsoft | Windows Server 2025 (Server Core installation) | From 10.0.26100.0 (inc) to 10.0.26100.33650 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-1037 | The developer builds a security-critical protection mechanism into the software, but the processor optimizes the execution of the program such that the mechanism is removed or modified. |
